1. Measurement Part of observing our world includes being able to describe things in it. Measurement allows us to gather facts. In science we use the metric system – SI (System International). We use it to describe length, mass, volume, and temperature. length mass volume temperature

2. Length, Volume, and Mass The basic unit of length is the meter. The basic unit of volume is the liter. The basic unit of mass is the gram. We add prefixes to these basic units in order to describe larger and smaller measurements.

3. Length… AREA = length x width

4. Mass…

5. 2 ways to find volume VOLUME = length x width x height

6. Temperature

7. Density Density is a measure of how tightly packed the “stuff” or matter is inside an object. You find the density of an object using the following formula: D = M/V (Your answer will be in g/cm³ or g/mL) The density of water is 1 g/cm³ or 1 g/mL. Therefore, an object with a density greater than 1 will sink, while an object with a density less than 1 will float.

8. Scientific Method The scientific method is a set of steps that scientists use to answer a question. Identify a problemResearch the problemCreate a hypothesisCollect dataAnalyze dataReport your findings